Airtac SAIJ160 Adjustable Cylinder SAIJ160BX550-20S
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160BX550-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 550mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ160 mm
- Stroke550 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX550-20S
The AirTAC SAIJ160X550-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear mechanical stroke adjuster. It delivers massive thrust, pushing 14074 N at 0.7 MPa, making it suitable for heavy-duty forming and pressing. The integrated -20 mm adjuster creates a usable travel window between 530 and 550 mm, letting you dial in the exact end position without shimming or swapping the actuator.
This SKU is built with a SUS304 stainless steel rod (code B) for superior corrosion resistance and includes a magnet (-S) for position sensing. You can mount AirTAC CMSE reed or DMSE electronic solid-state switches directly into the sensor grooves on both sides of the extruded aluminum barrel. The rear stopper sets the travel end, but it is not a locking device; the cylinder relies on live air pressure to maintain force.
Airtac SAIJ160 Adjustable Cylinder SAIJ160BX550-20S Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160BX550-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 550 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ160 Adjustable Cylinder SAIJ160BX550-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×550 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX550-20S Is Used
Heavy Press Tuning
Fine-tune the 530-550 mm stroke end precisely during setup to accommodate different material thicknesses in a heavy pressing application without external stops.
Product Changeover
Quickly adjust the rear stopper on a production line to handle varying product sizes, using the massive 14074 N force at 0.7 MPa to form or stamp new profiles.
Corrosive Stamping
Leverage the SUS304 stainless steel rod for operations in washdown or mildly corrosive environments where a standard carbon steel rod would degrade.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX550-20S the Right Cylinder?
Choose this 160 mm bore when a 125 mm cylinder (providing 8590 N push at 0.7 MPa) cannot generate enough force, but stepping up to a 200 mm bore (21991 N) would be excessive. The adjustable 530-550 mm window is ideal for machine setups requiring precise end-position tuning during commissioning or product changeover, avoiding the rigid fixed stroke of a standard SAI cylinder. Because the nominal stroke is 550 mm, the 40 mm rod and M36x2 thread provide robust support, but an external guide is strongly recommended to prevent excessive side-loading on long unsupported travel.
For an exact ISO 15552 replacement, match the 160 mm bore, 550 mm stroke, -20 mm adjustment, PT tapered ports, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that this actuator does not hold its position without live air; if you need true load-holding, consider the SAIL or BSAI series instead.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ160 Adjustable Cylinder SAIJ160BX550-20S FAQ
At an operating pressure of 0.7 MPa, this 160 mm bore cylinder provides a push force of 14074 N and a pull force of 9425 N. At the maximum rated pressure of 0.9 MPa, the push force increases to 18095 N.
The rear adjuster acts as a mechanical stop that allows you to shorten the effective travel from the nominal 550 mm down to 530 mm. This creates a 530-550 mm usable window for fine-tuning the end position at commissioning, but it does not lock the load without live air pressure.
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